ozgirl
Forum Replies Created
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Here is the advice from the CDC. -
Out of general interest does anyone know what units the % Alcohol in Figure 5 from lubrizol are? weight/weight, weight/volume or volume/volume because there is a reasonable difference between the values due to the low SG of ethanol.
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I think the general guideline is about 10°C above the melting point of the highest melting point of your solid ingredients.70°C is generally a pretty good place to start for beginners because raw materials like emulsifying wax NF, cetearyl alcohol and BTMS have melting point around 50 to 60°C.
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We generally use method B also. We don’t notice any loss of fragrance.
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Cocamidopropyl Betaine contains salt and can be used as a source of salt for thickening.This product looks like it contains Plantapon SF (INCI: Sodium Cocoamphoacetate (and) Glycerin (and) Lauryl Glucoside (and) Sodium Cocoyl Glutamate (and) Sodium Lauryl Glucose Carboxylate ) which does not thicken with salt.
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Xanthan Gum can also feel sticky so you might want to try a different thickener.
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Cetrimonium Chloride is a preservative (https://www.cosmeticsinfo.org/ingredient/cetrimonium-chloride).
Some preservatives can also be listed as Fragrance. -
That is a great demonstration of the failures of these preservatives.I always think that these pictures of bacteria are like art!
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Some Carbopol polymers can be used to create anhydrous glycerine gels so you might be able to try this with propanediol.
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I would recommend adding Optiphen Plus at the recommended usage rate (1%) and then adding extra potassium sorbate (0.1-0.2%) to cover the shortfall in mould coverage. Also ensure that your pH is around 5 to get the best performance.Here is a great website that reviews preservatives that might give you some other options. http://makingskincare.com/preservatives/
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I have seen cetearyl alcohol used at around 30% to create hot pour shampoo bars. Perhaps you could replace some of your oils with cetearyl alcohol.For exampleor this Shampoo Bar formulation from InnospecSodium Cocoyl Isethionate (Pureact I-85EC (Innospec)) 38.50Sodium Lauroyl Methyl Isethionate (Iselux®(Innospec)) 10.00Sodium Methyl Lauroyl Taurate (Pureact TR-L90 (Innospec)) 10.00Cetearyl Alcohol (Laurex®CS (Innospec)) 30.00Behentrimonium Chloride (BTAC 228KC (KCI)) 5.00Guar Hydroxypropyltrimonium Chloride (Activsoft CD (Innospec)) 0.50Argan Oil 1.00Aqua 3.00Activated Charcoal 1.00Fragrance 1.00Also I have seen glycerin added to dissolve the surfactant portion but these type of bars dissolve quickly during use. For example
I personally think that you should leave the oils for your conditioner bar.
@Belassi cationics and anionics are commonly seen together in solid shampoo bar formulations.
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No we didn’t add any dedicated thickeners but it does include Lamesoft PO65 (Coco glucoside and Glyceryl Oleate) which does have a small thickening effect.
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Usually yes but the only way to know for certain that it is safe is to test it on those surfaces.Changing your surfactants could improve your degreasing performance.
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The cleaning performance of your formula would need to be tested. It is likely that you would see a decrease in cleaning performance by reducing the pH but how much would depend on the other components of your formula (e.g. surfactants / solvents etc).If you share your formula you might get more input.
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I have definitely seen Phenoxyethanol drop the viscosity like that in surfactant formulations. We had to reformulate our products when we changed from MCI/MI preservatives.You may need to increase your surfactant concentration. We achieve a viscosity of around 4000 with a ALS/CAPB/Cocamide MEA blend and a phenoxyethanol based preservative so it is possible.Just remember that adding too much salt can also cause a decrease in viscosity.
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Just be careful with colorants because the US only allows a small number of approved colorants to be used in cosmetics.
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I hope the move goes smoothly!
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Coco glucoside has a high pH (~11) so my guess is what you are seeing is a reaction due to the high pH.Usually when making a shampoo you add water first to the batch and then add your other materials to the water. There is generally no need to premix your materials.Using large amounts of hydrosols or aloe vera juice will just cause issues with preservation and stability so just keep these at low amounts.
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If you just want to sell products contact contract manufacturers and they can formulate these products for you and you can just concentrate on marketing and selling.If you genuinely want to learn how to formulate you will need to start at the beginning. The resources that have been mentioned above are a great place to start. Please beware that becoming a competent formulator does not just happen by copying a formula from a book. It takes many hours of learning and experimenting.The list of product types that you are interested in formulating is certainly vast and even some of the most experienced cosmetic chemists on this forum wouldn’t have the knowledge to formulate every single type of product on your list.
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It is also possible that the white particles are glycol distearate from your pearliser. What type of packaging are you storing your product in? Is it possible that you are getting some evaporation and the pearlescent is drying out on the edges on the container an falling into the product?Do you have a photo?
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You will often find that when you purchase small quantities the price is significantly higher than if you purchase large quantities.If you buy small quantities from a reseller the resellers will buy a larger quantity from the distributor and repack it. You will pay more to cover the extra packaging, time taken to repack plus the repackers profit. I generally find this is usually at least double the cost compared to purchasing larger/drum quantities.The cost of shipping also comes into play. In most circumstances it costs the same to ship a pallet containing four drums as it does to ship one drum on a pallet. Many products sold commercially include delivery so that shipping cost is lower per drum if you can purchase full pallets of products.Your location also can mean higher prices. If your product is shipped a long distance this will increase prices. I have in the past paid double the price to have a product shipped in by air with a two week lead time rather than wait 14 to 16 weeks for sea delivery.
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Shea butter is notorious for forming grains in balms. Try replacing it with something else or at least reducing it.Coconut oil is not a great idea in balms as it melts at temperatures close to room temperature so will be melting/solidifying regularly especially in summer.There are several products such as Cera bellina (INCI: Polyglycerol-3 Beeswax) and Softisan 378 that are reported to help reduce grain formation in balms.
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Here is some information on conducting stability tests.
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I think that if I handed our manufacturer a production order for a product containing 66 ingredients I would probably be slapped in the face . I doubt the graphic designers creating the label would be very happy either trying to fit that many ingredients on the label. 😮
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Developing a chemical peel formula is generally considered to be quite an advanced formulation project for a cosmetic chemist. There are also regulations that you need to be aware of when working with AHAs.Please make sure you have the relevant experience before attempting this project. Your suggestion of using teaspoons suggests that you do not have this experience. Cosmetic chemists work in weights with percentages.I am not trying to deter you from creating your own products just trying to make sure you do it safely.